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0613 Tempest Tech-Tip Alaska Cold Starts

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What really happens in an oil filter during a cold start? First, by cold start, we’re talking about starting an engine in temperatures below about 20 degrees F. In places where it gets colder than a Montana well digger’s butt, many aircraft mechanics have seen oil filters burst by cold starts. But, why does it happen? What’s involved? And what can operators do to prevent it?


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